Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Patent
1981-10-28
1983-09-20
Larson, Lowell A.
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
72105, 29159R, B21D 2214
Patent
active
044048297
ABSTRACT:
A method and apparatus for the manufacture of pulleys is presented, wherein the pulley is manufactured from a blank placed between a head stock and a tail stock assembly. While maintaining constant pressure between these two assemblies, the head stock assembly is spun and the pulley blank is transformed into the pulley through the application of stress upon the sidewalls of the pulley blank. When a multiple groove pulley is desired, this transformation is administered by the combination of at least two external spin rollers and at least one internal spin roller, the latter deforming the pulley blank while positioned within the internal circumference of the pulley blank and mounted on an internal roller shaft, rotatable within the pulley drive shaft. When a single groove pulley is desired, the external spin roller may deform the pulley blank. The method of internal deflection during the spin pulley operation increases the quality and the quantity of the final products produced by such apparatus and according to such methods. An automatic orientation device, an automatic blank loading device, and an automatic pulley unloading device is further provided in accordance with the invention to place the blank in its proper position between the head stock and the tail stock assemblies and to remove the final product from the assemblies. The entire machine and its designated process provide an automatic spin pulley manufacturing system.
REFERENCES:
patent: 3910423 (1975-10-01), Killian et al.
patent: 4134285 (1979-01-01), Iaconetti et al.
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